/*
 * Copyright 2022 Apollo Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */
package com.ctrip.framework.apollo.biz.service;

import com.ctrip.framework.apollo.biz.entity.AccessKey;
import com.ctrip.framework.apollo.biz.entity.Audit;
import com.ctrip.framework.apollo.biz.repository.AccessKeyRepository;
import com.ctrip.framework.apollo.common.exception.BadRequestException;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;

/**
 * @author nisiyong
 */
@Service
public class AccessKeyService {

    private static final int ACCESSKEY_COUNT_LIMIT = 5;

    private final AccessKeyRepository accessKeyRepository;
    private final AuditService auditService;

    public AccessKeyService(
            AccessKeyRepository accessKeyRepository,
            AuditService auditService) {
        this.accessKeyRepository = accessKeyRepository;
        this.auditService = auditService;
    }

    public List<AccessKey> findByAppId(String appId) {
        return accessKeyRepository.findByAppId(appId);
    }

    @Transactional
    public AccessKey create(String appId, AccessKey entity) {
        long count = accessKeyRepository.countByAppId(appId);
        if (count >= ACCESSKEY_COUNT_LIMIT) {
            throw new BadRequestException("AccessKeys count limit exceeded");
        }

        entity.setId(0L);
        entity.setAppId(appId);
        entity.setDataChangeLastModifiedBy(entity.getDataChangeCreatedBy());
        AccessKey accessKey = accessKeyRepository.save(entity);

        auditService.audit(AccessKey.class.getSimpleName(), accessKey.getId(), Audit.OP.INSERT,
                accessKey.getDataChangeCreatedBy());

        return accessKey;
    }

    @Transactional
    public AccessKey update(String appId, AccessKey entity) {
        long id = entity.getId();
        String operator = entity.getDataChangeLastModifiedBy();

        AccessKey accessKey = accessKeyRepository.findOneByAppIdAndId(appId, id);
        if (accessKey == null) {
            throw new BadRequestException("AccessKey not exist");
        }

        accessKey.setEnabled(entity.isEnabled());
        accessKey.setDataChangeLastModifiedBy(operator);
        accessKeyRepository.save(accessKey);

        auditService.audit(AccessKey.class.getSimpleName(), id, Audit.OP.UPDATE, operator);
        return accessKey;
    }

    @Transactional
    public void delete(String appId, long id, String operator) {
        AccessKey accessKey = accessKeyRepository.findOneByAppIdAndId(appId, id);
        if (accessKey == null) {
            throw new BadRequestException("AccessKey not exist");
        }

        if (accessKey.isEnabled()) {
            throw new BadRequestException("AccessKey should disable first");
        }

        accessKey.setDeleted(Boolean.TRUE);
        accessKey.setDataChangeLastModifiedBy(operator);
        accessKeyRepository.save(accessKey);

        auditService.audit(AccessKey.class.getSimpleName(), id, Audit.OP.DELETE, operator);
    }
}
